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Finding the Fourth Proportional to 122,677.67, 169,290.74 and 68,967.69

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Solution

The fourth proportional to 122,677.67, 169,290.74 and 68,967.69 is: 95,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,677.67 : 169,290.74 = 68,967.69 : x
  2. Step 2: Convert to fraction form
    122,677.67/169,290.74 = 68,967.69/x
  3. Step 3: Cross multiply
    122,677.67x = 169,290.74 × 68,967.69
  4. Step 4: Simplify right side
    122,677.67x = 11,675,590,813.77
  5. Step 5: Solve for x
    x = 11,675,590,813.77/122,677.67
  6. Step 6: Final answer
    x = 95,172.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.